list(POP_{FRONT,BACK}) should allow a number instead of out-variables to pop/remove off a number of items on stack
list(POP_x commands for x=FRONT, BACK, conveniently allow multiple out-vars, and pop off the corresponding number of items from a stack. That's great, but for when you want to just throw away n items from the front or back of a stack, there is no way to do that. However, allowing a number literal in place of an out-var name could easily resolve this.
Edited by Brad King